Reed adjustment for looms



Oct. 2, 1951 c. P. BERGSTROM 2,569,880

REED ADJUSTMENT FOR LOOMS Filed April 27, 1950 INVENTOR CARL P. BERGSTROM 0W. 7 H r ATTORNEY.

Patented Oct. 2, 1951 REED ADJUSTMENT FOR LooMs Carl P. Bergstrom, Millbury, Mass., assignor to Crompton & Knowles Loom Works, Worcester, Mass., a corporation of Massachusetts Application April 27, 1950, SerialNo. 158,405

8 Claims. (Cl. 139-192) This invention relates to improvements in the mounting of reeds in looms and it is the general object of the invention to provide a simple means by which the reed can be aligned with the shuttle boxes.

In a well-known type of loom for weaving terry fabrics the reed is carried by hanger means pivoted to the lay near the upper reed rib so that it can be swung backwardly and forwardly with respect to the lay incident to the terry forming operation. When the reed'is moved to its forward position for guiding the shuttle during its flight the reed must be aligned with the backs of the shuttle boxes. In the past this alignment has been attained by several parts including an adjusting screw transverse of the lay or reed and a clamping screw parallel to the reed.

It is an important object of the present invention to provide a simple adjustment in the form of wedge to be located between the hand rail which engages the upper reed rib and the reed hanger pivoted on the lay. The wedge permits the use of a simple pivotal mounting for the hanger and also permits the upper end of the reed to be adjusted readily with respect to the hanger to align the reed with the shuttle boxes. When the desired adjustment has been made the several parts can be clamped together in adjusted posiiton by a bolt extending preferably through the wedge.

While the wedge is of particular use in connection with swinging reeds of terry towel looms it may also be used for relative adjustment of the reed with respect to the lay in non-terry looms. With these and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts hereinafter described and set forth.

In the accompanying drawings, wherein a convenient embodiment of the invention is set forth, Fig. 1 is a diagrammatic front elevation of a loom lay having the invention applied thereto, Fig. 2 is an enlarged vertical section on line 2-2, Fig. 1, showing the reed mounting at the left end as viewed in Fig. 1,

Fig. 3 is a detailed front elevation looking in the direction of arrow 3, Fig. 2,

Fig. 4 is a horizontal section on line 4-4,

Fig. 3.

Fig. 5 is a detail plan view looking in the direction of arrow 5, Fig. 3, and

Fig. 6 is a diagrammatic view illustrating the manner in which the upper end of the reed may be adjusted with respect the ylay and the.

the right end and a gang of shuttle boxes 3 at the left end. The lay beam is mounted on swords 4 and 5 which rock back and forth in the usual manner about a rocker shaft or pin not shown herein but well understood.

Right and left picker sticks 6 and 1, respectively,may be of usual construction for picking a, shuttle S in active position back and forth across the lay. The reed R may be of usual construction and has top and bottom ribs 8 and 9, respectively. The reed has each end thereof mounted so that it can be swung relatively to the lay and since the end mountings are the same only one of them will be described in detail; namely, the mounting at the leftend as viewed in Fig. l. 7

Referring more particularly to Figs. 2--4, the sword 5 may be secured as at H! to the beam I and has an upward extension H which is back of and extends above the shuttle race I2 on top of the beam 1. A hanger support [3 is secured in fixed position on the lay by bolts H which extend through a vertical'slot [5 in the sword extension ll. Support 13 may if desired have a forward flange or extension [6 to which a box mouth member I! is secured at I8. Support l3 has horizontal slots IQ for bolts l4, and by reason of the slots [5 and IS the support l3 can be adjusted vertically and horizontally on the lay. A shuttle box guide plate 20 is secured to the lay sword as at 2i and has a groove 22 receiving a tongue 23 on the gang of shifting shuttle boxes 3. Each shuttle box will have a box back 24 along which the shuttle moves when being picked out of the box.

said bolt I D in addition to bolt 2! Extending forwardly from and integral with the support l3 at the right side of the latter is a bearing hub 26 which receives a pivot pin 21 substantially parallel to the lay beam and secured to the upper end of a reed hanger 28. The hanger extends downwardly from the pivot pin and has a horizontal part 29 which supports a back stay 30 grooved as at 3| to receive the lower rib 9 of the reed R. The rib 9 has a close fit with the groove 3| so that the lower-end of the reed will move in unison back and forth with the backstay relatively to the lay beam.

st? s ows he. means wh h awed.

This box back is aligned with. the front face 25 of the guide plate 2fland'thelatter may be secured to the sword by the aforemounting can be manipulated for the formation of terry fabric. The lay end 35 which is secured to the beam I and sword 5 is provided with a back and forth adjustable but normally fixed pivot 36 on which is mounted a lever 31 the rear end of which, the right as viewed in Fig. 2, is connected to a tension spring 38 the lower end of which is attached in any approved manner to a fixed support (not shown). The forward arm 39 of lever 31 is pivoted as at 40 to a link 4| the forward end of which is pivoted as at 42 to the hanger 2B. A positively controlled rod 43 is connected as at 44 to lever arm'39.

During each flight of the shuttle the reed 'R will be rearward of the fell. of the cloth and in the position shown in Fig. 2 aligned-with box'back 24 to guide the shuttle. Assuming that the loom is at the start of a three pick terryin'g operation, the rod 43 will be drawn downwardly by wellknown mechanism (not shown) for two succes- ,sive forward beats of the lay so that the baokstay 30 will'be to the right of the position-shown-in Fig. .2 frelative to the lay. On the third beat-up, however, the rod 43 will be in the position shown in Fig.2 and as the lay approaches front center the reed will be in relative forward position to formthe terry loops inwell-known manner.

1 Theupperrib 8 of the reed is received by a groove 5'51 in the underside of a hand rail 5 made. preferably of wod,.which extends across 7 the lay abovetheshuttlerace l2 and back stay.

The rearside of the left end of the hand rail is formed with .a flat. downwardly and rearwardly inclined, surface 52.. A. wedge means 53' has a front face, 54 inclined-similarly to surface 52 and has. a rear fiat'surface 55 for engagement with a flatsurface 56 formed on an extension or hand rail carrier projecting laterally from the right f. and. integral with the hanger 28. as shown for instance in Fig. 3. The wedge means has avertical slot liflfor a. bolt 6.! the forward part of which extends through the hand rail and the rear. part of which after passing through the Wedge member passes, through a slot 6.2 extend- 315 ifi i i a y in the lateral extension 5]. belt or securing means El may have a wing, nut 63' threaded on the front end thereof and may have a. holding nut 64 threaded on to the rear end thereof behind lateral extension 51.

When the reed is being, assembled the. bolt 61 will be loose so that the handrail can be tempo.- rarily raised to'permit fitting of the bottom rib 9 into the backstay groove 3|; The handrail 51. is then lowered until the top rib 8 0f the reed is received snugly by the groove 50 in the under side of the hand rail. When the parts are in this position the hand rail will be supported by the reed and the latter will, be supported by the back stay. The reed will be in its forward po sition relative to the lay at this time, as as. shown. in Fig. 2. The wedge means 53 will then be.

dotted lines, Fig; 6; until the upperend of'the' reed aligns with the shuttle box wall 24 andthe face 25*- of the-guide 2-0, af-terwl'rich= thenuts'63- and B l will be tightened and the' bolt 61 willjbe able to hold'the hand rail; the wedge means- 53,

and the hanger-2 8' fixed together-inrelatively ad After this adjustment ismade j usted positions. H the reed can swing rearward lywith respect to The 4 the lay as already described for the formation of terry loops without disturbing the position of the wedge means or the parts in front of and behind it to which it is clamped by the bolt 6|.

The reed mounting at the right end of the loom will be substantially the same as that already described in connection with Figs. 2-4, except that'some of the partswill be of the opposite hand. The wedges at the two ends of the hand rail are alike and independently adjustable .so that the right end of the reed can be adjusted relativelyto the shuttle box 2 in a manner similar to the'adjustment already described for the leftend of the reed.

From the foregoing it will be seen that the upper end of the reed can be adjusted by very simple means with respect to the hanger 28 and the lay merelybychanging the vertical position of the wedge 53. The bolt 6| holds the parts in any adjusted position so that once a correct adjustment has been made between-thereedand the shuttle box the adjustment will be maintained. The. adjusting wedge means 53 is "much simpler than previously used means for effecting this adjustment, and the pivot pin 26 can remain in the same position with respect to the lay for all back and forthfadjustments of the reed, since only the hand rail and not the hanger 28 is involved in reedadjustment. The reed rib '8 by reason of its close fit/in the slot moves in unison with the handrail 5! in the back and forth adjustments of the latter effected by a change in the position of the wedge 53. The wedge will not ordinarily exert very much downward force, but.if it exerts any such force it will in a. direction to hold the rib 3 in close ngage ment with the hand rail. While. the'wedge has been described with more particular reference to adjustment of a med in a terry loom, it willbe understoodthat the wedge can. alsobe used for attaining alignment of the reed with respect-to theshuttle box in such looms as are notnec'e'S- sarily adapted for the weaving of terry fabrics.

' Having thus described the invention it will be seen that changes. and modifications of the foregoing specific'disclosure may be made without departing from the spirit and scope of the in-' vention; i

-What is claimed as new is: 1

1. m a loom lay having a shuttlerace; a reed behind the race having the lower part thereof supportedby thelay, a hand rail engaging the upper part of the reed and movable backwardly and forwardly therewith relatively to the lay, wedge means betweenthe lay and hand rail mounted for'verti-cat movement tovary the position of the hand rail ands'aid upper part of the" reed: with respect. to? the lay, and meansholding the hand rail. and. wedge: means fixed in relativeadjusted; position. with respect to the lay.

. 2; In. 32.10011 layahawing, a shuttle race, allay sword having; a part. thereof extending upwardly from the shuttle race, areed. behind the shuttle race, ahandrail. oven the shuttle race engaging and movable; with the upper part: of the'wreed wedge means between said; part ofthala-y. sword and. the hand rail movable vertically with respect to the lay positioning the hand r ail relatively. to. said part-ofthe sword. to effecta back and forth'adjustment ofthe upper part ofithe reed, and, means holding the handrail and:wedging'means' fixed iiradjusted position with respect;

to said part of thelay sword.

31115113}: loom lay having a shuttle" race,.a hand railiabove' the shuttle racehaving a surface in} clined downwardly and rearwardlylrela'tivly to the race, a reed extending between the lay and hand rail, the latter and the part of the reed in engagement therewith being movable in unison backwardly and forwardly relatively to the lay, wedge means having a downwardly and rearwardly engaging surface engaging said surface of the hand rail and having another surface oblique to said inclined surface and engaging a part of the lay and movable vertically relatively to the latter to change the position of the upper part of the reed with respect to the lay, and means holding the hand rail and wedge means fixed in adjusted position with respect to the lay.

4. In a loom lay having a shuttle race and a shuttle box, a hand rail above the shuttle race, means on the lay having a vertical surface, wedge means having a vertical surface engaging said surface of the lay and having another surface inclined downwardly and rearwardly, the hand rail having also a downwardly and rearwardly inclined surface engaging said other surface of the wedge means, a reed for the lay having part thereof engaging and moving backwardly and forwardly in unison with the hand rail relatively to the lay, said wedge means by downward movement relative to the lay effecting forward motion of the hand rail and said part of the reed with respect to the lay to adjust the reed relatively to the shuttle box, and means securing the hand rail and wedge means fixed in adjusted position on the lay.

5. In a loom lay having a sword and a shuttle box, a reed hanger pivotally mounted with respect to the sword, a back stay member supported by the hanger, a hand rail member above the back stay, a reed extending between said members and movable in unison therewith relatively to the lay, wedge means between the hanger and hand rail effective by a change of position thereof to vary the back and forth position of the hand rail and part of the reed engaged therewith relative to the shuttle box, and securing means holding the hanger, hand rail and wedge means in adjusted relative position.

6. In a terry loom having a lay provided with a shuttle box, a reed hanger, a pivotal connection between the lay and hanger around which the latter is swingable backwardly and forwardly relatively to the lay, a back stay member carried by the hanger; a hand rail member above the back stay, a reed held by the members and movable in unison therewith around said pivotal con-' nection, wedge means between the hanger and hand rail member movable relatively to the hanger and hand rail member to vary the position of the reed to align the latter with the shuttle box, and means extending through the wedge means holding the latter in fixed adjusted posi-' tion relative to the hanger and hand rail member.

7. In a terry loom having a lay provided with a shuttle box, a reed hanger, a pivotal connection between the lay and hanger around which the latter is swingable backwardly and forwardly relatively to the lay, a back stay member carried by the hanger, a hand rail member above the back stay, a reed held by the members and movable in unison therewith around said pivotal connection, a hand rail carrier on the hanger, wedge means between the hand rail member and carrier movable relatively to the carrier to vary the position of the reed to align the latter with the shuttle box, and means holding the carrier, hand rail member and wedge means in fixed adjusted position relative to each other.

8. In a loom lay provided with a shuttle box, a reed hanger pivotally mounted with respect to the lay, a back stay supported by the hanger, a hand rail above the back stay, a reed extending between the back stay and hand rail the upper part of which is movable in unison back and forth with the hand rail relatively to the lay, wedge means between the hanger and hand rail effective by a change of position thereof relative to the hanger to vary the back and forth position of the hand rail and upper part of the reed with respect to the shuttle box, and securing means holding the hanger, hand rail and wedge means fixed to each other in relative adjusted position.

CARL P, BERGSTROM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,489,978 Rogers et al. Nov. 29, 1949 

